fc really depends on how you drive and places you drive.

My auto Myvi, 56k mileage.
I'm a heavy footer (revv above 3k), 90% city drive last 350KM-380KM only.
50% city + 50% highway can last about 430KM.
I tried super light foot before (revv about 2k only), last 480km.
Johor back to KL at speed 140kph to 160kph (average 150kph). Ngam ngam 1 tank, have to pump at sungai besi Shell.
I also tried KL to Johor at speed 90kph (following behind lori) reach Johor with more than half tank of petrol left.
above are base on full tank petrol.

Conclusion, fc may vary ~100km depending on your driving style and place.

haha... this is funny...